I PMed Ryan at RVS performance last night and asked him about QSC clutch kits for the Ace. He told me for the 570 ACE any sportsman 570 kit will work. I also asked him about the 330 Ace and he told me that they are trying to find someone with one that will let them use it while they develop a kit for the 330 ACE. So if anyone lives in Minnesota and has a 330 ACE that would be willing to let RVS use in their development of the clutch kit for the 330, they need to contact him at RVSPERFORMANCE.COM or go to the Polaris ATV Forum and PM him there, or call 651-500-0657. He goes by the name of Ridinagain. Who knows, you might get a free kit installed, or at least get a great deal on one